Lubricating device.



W. S. HARLEY & R. W. KILPATRIGK.

LUBRIGATING DEVICE.

APPLIOATIONJILBD MAY 21, 1913.

Patented Sept. 8, 1914.

INVENTORQ:

WITNESSES RNE PfM

UNITED STATES PATENT OFFICE.

' WALTER s. EABLEY AND ROBERT w. KILPATBICK, OFPHILADELPHIAL PE NSYL- VANIA, AssreNoRs, YMESNE ASSIGNMENTS, r THEM EARL-EY DRY-GRAPHITE LUBRICATOR COMPANY, OF PHILADELPHIA, PENNSYLVANIA, .A' CORPORATIDN or PENNSYLVANIA.

Application filed May 21, 1913, Serial N 0. 768,930.

To all echojn t may concern Be 1t known that we, WALTER S. EARLEY and ROBERT W. 'KILPATRIGK, citizensof thevices, of which the following is a specifica- Y all as will behereinafter fully described and particularly claimed.

" common and welllmown. During this well known operation of the engine, steam is rior to regularly and automatically tion.

- The object of our invention is to provide anovel, simple and efficient device by means of which flake graphite may be regularly and uniformly fed toa cylinder or its equiv alent, in which various degrees of steam, air or other pressures are produced, for the purpose of 'lubricatinqthe cylinder and the devices as'sociatedit ierewith for the production of the dliterent pressures, the device being periodically actuatedflby the regularly recurring changes of pressure in the cylinfeed a uniform quantity of graphite to the cylinder.

Our invention includes a casing for con taining the graphite and having'a' passageway communicating with the cylinder and a-val-ve for controlling theTpassage of graplv ite from the casing-to the cylinder and our invention, particularly, includes a novel construction and arrangement 'of 'a valve head adapted to be,forced by the pressure within the casing toward a, seat which surrounds the said passagewayandthereby instantly and effectually prevents any graphite .from

leaving the casing after the pressure therein falls below the pressure within the cyl nder,

In the accom an 111 .drawin s' illustrat- U v I n e a I b I mg our 1nvention,F1gure l,1s a vertical sectionlthrough our improved lubricating device and-a portion of an engine cylinderto which the lubricating device is operatively connected. Fig; 2, is a horizontal section through the lubricatingdevice, on line 2-2 e 4 Referring. to. the drawings, 3 designates our improved lubricating device, t a portion of anengine cylinder; to which the device 3 is connected and 5a portion of the piston which is reciprocated within the cylinder l during the operation of the engine, as is regularly admitted to and exhausted from Specification of Letters Patent.

LUBRICATING nnvrcn.

Patented sept. 25, 1914.,

the respective ends of the cylinder in prescribed order, thereby causing the pressure to rise and fall within the cylinder; and. as the construction and operation of the valves and other devices which are concerned in causing the rise and fall of the pressure are common and well known, no description or illustration thereof is deemed necessary herein.

"Our lubr'cating device 3- ,is constructed and connected as follows: 6 designates a hollow casting forming a casing inclosing a chamber 7 for the graphite. The top of the casting 6 has an opening 8 therein. and screwed into the opening 8 is a suitable head 9 which normally closes the opening 8, steam tight, and which may be removed'when desired to permit the supply of graphite to the casing 6 through the opening 7 S. Screwed into the bottom of the casting 6 is a stem 10, a steam tight joint being formed between the stem and the casting 6 The bottom of'the stem 10 is screwed on to the upperend'of a short pipe 11, the lower end of which is screwed into the cylinder h The pipe 11 afi'ords communication between the cylinder l and a vertical passageway 12 formed in a plug 13 which isscrcwcd into the lower end of a vertical opening 14 in the stem 10. The opening 14 extends through the upper portion of the stem 10 which projects up into the chamber 7, as shown. The top of. the plug ldforins a valve. seat 15 which surrounds the passage way 12; and seated on the top or the plug 13 is the lower end of a vertically-inovahle, cylindricz'il valve head 16 which is slidably fitted to the opening ll and rests normally on the valve seat' 15 and closes communication between the upper portion of the opening ll and passageway 12.

Screwed into theuppcr end of the opening 14 is a screw 17 which is vertically adjustable therein and which is proTiTledunth a lock nut'lS'adapted to engage the top of 16 may be nicely regulated. The screw IT has a vertical tapered pas 'z'ig'ewav ll cxtending llu'rcthrough. smaller at ltf lower than at its upper end and for a purpose hereinafter explained.

' The open'ing M in the stem communicates with the chamber 7 by two lateral passageways l9 and which extend through the wall of the stem 10, one above the other, and above the valve seat 15, as

shown. When the valve head 16 is raised, commun cation between the. passageway 12 and chamber 7 is established through the opening 1 1 and cheer both of the passageiways ld and 2 in accordancewith the'positionof the screw which limits the movemen: of the valve head 16. I

The operation of the device is as follows:

,As'the steam-or other pressure enters the cylinder t and is "exhausted therefrom, to cause the pressure within the cylinder to rise and fall at regular, intervals, in the usual manner, the valve head; 16 is raised and lowered with the rise and fall of pres.

sure, within the cylinder 4. .As the pressure .withinthe cylinder 4, raises, it lifts the, valve head 16 into contact with the bottom of the screw 17 and. enters the chamber 7 through the passageway 12, the

opening 14 and one or both of the passage ways 19 and 20, in accordance with the position of the screw 17 As the pressure within th" cylinder 4 falls below the pressure:

W; the chamber 7, part of the steam .wahm the. chamber 7 returns tothe-cylin der' 'and carries therewith a quantity of graphite contained within the chamber lfiimtil the pressure within the chamber 7 forces the valve head 16 back to its seat 15 and'stops the further discharge of. graphite upon the top of'thc valve head16 to "quickly return it to its seat 15, although it is not essential that the passageway 21. be present, as, in 1 its absence, the pressure 'within the chamber 7 will find :its way through the, passageways 19 and 29; and

around the valve head 16 to the top' thereof; and return it to and hold it agamst its seatf;

@It .will be readily understood that by adjusting the screw 17 the quantity of graphite fed to the cylinder 4 each time the-' valve head is raised and lowered may around'the passageway 12 leading to the cylinder 4, and the valve head 16 being held against the seat by the pressure within the chamber 7 is one of the essential features of our invention, as by it we are enabled to contr0l,'accurately, the amount ofgraphite fed to the cylinder, each time the valve head is operated. This accurate feeding of the graphite is, as is well'known,-a very important consideration in properlubrication.

We claim: a

'1. The combination with a fluid pressure cylinder, of a casing adapted tofcontain a lubricant, a hollow stem extending-into the casing, a vertically -"movable' cylindrical valve head loos'elyfitted within said stem and guided thereby, "said stemhaving a part forming a valve seat upon which the bottom of said valve head rests, said stem having a passageway surrounded by said seat and leading therefrom' to the interior of the cylinder andnormally closed by said valve head, said stem having a lateral passageway therein above said seat and .opening into the casing, said lateral passageway afiording communication between the first named passageway and the interior of the casing when said valvehead is raised above the lateral passageway, and means for limiting the upa ward movement of the valve head.

I 2. Thecombination with-a fluid pressure cylinder, ofa-casing adapted to'contain a lubricant, a "hollow stem extending into the casing, a vertically movable cylindrical valve headloosely' fitted within said stem, and guided thereby, said stem having a part forming avalve seat upon which the bottomof said valve head rests, said stem having a passageway surrounded by said seat and leading therefrom to the interior of the cylinder and normally closed by said valve head, said stem having. a lateral passage way therein above-said seat and opening into the casing, said lateral passageway affording communication between the first named passageway and the interior of the casing when said valve head is raised above the "lateral passageway, and an adjustable screw screwed into the top of said stem and adapted to limit the upward movement of the valve head. U

3.. The combination witha fluid pressure cylinder, of a casing adapted to contain a lubricant, a hollow stem extending into the casing and communicating with the cylinder, said stem having a lateral passageway {thereinfopening into the casing, a vertically- "movable; cylindrical valve head within said stern'andnormally closing said passageway, said passageway aflording communication between the interior of the casing and the interior of the cylinder when-the valve head is raisedabove the passageway, and a part limiting the-upward movement of the yalve cylinder,- of a casing inunicating with the interior of the casing closed by the upper end of the valve head when it is'in the uppermost position.

a The combination with afluid pressure adapted to contain a a hollowstem extending into the lubricant,

a vertically movable cylindrical casing,

valve head within said stem, said stem hav ing a partforming a valve seat upon which the bottom of said valve head rests, said stem having a passageway surrounded by said seat and leading therefrom to the interior of the cylinder and normally closed -by said valve head, said stem having a lateral passageway therein above said seat 7 and opening into the casing, said lateral passageway afiording communicationbetween the first named passageway and the interior of the casing when said, valve head is raised above the lateral passageway, and a ,partlimiting the upward movement of the valve head, and provided with a passageway communicating with the interior of the casing and closed by the upper end of the valve head when it is in the hppermost position.

5. The combination witha fluid pressure cylinder, of a casing adapted to contain a lubricant, a hollow stem extending into the casing, a vertically movable cylindrical valve head within said stem,-said stem having a part forming the bottom of said valve head rests, said a valve seat upon which stem having a 'passageway surrounded by v 'said seat and leading therefrom to the interior of the cylinder and normally closedby said valve head, said stem having a lateral passageway-therein above said seat and opening into the casing, said lateral passageway alfording communication ,be-

tween the first named passageway and the interior of the casing when said valve head is raised above the lateral passageway, and an adjustable screw screwed into the top of said stem and adapted to limit the upward movement of the valve head, said screw. hav-v ing a passageway extending tlierethrou h andcommunicating with the interior of the casing and closed by the upper end of the valve head when it is in the uppermost po- 

